Home / 13,689.09-20,520.68-5,903.37

Finding the Fourth Proportional to 13,689.09, 20,520.68 and 5,903.37

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Solution

The fourth proportional to 13,689.09, 20,520.68 and 5,903.37 is: 8,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.09 : 20,520.68 = 5,903.37 : x
  2. Step 2: Convert to fraction form
    13,689.09/20,520.68 = 5,903.37/x
  3. Step 3: Cross multiply
    13,689.09x = 20,520.68 × 5,903.37
  4. Step 4: Simplify right side
    13,689.09x = 121,141,137.17
  5. Step 5: Solve for x
    x = 121,141,137.17/13,689.09
  6. Step 6: Final answer
    x = 8,849.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.